Signal relay device



FIG. 1 is a perspective view of the front, left and top sides of a signal relay device showing our new design;

FIG. 2 is a perspective view of the rear, right, and bottom sides thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a perspective view thereof, showing a state of use; and,

FIG. 10 is another perspective view thereof, showing another state of use.

The broken lines shown represent unclaimed subject matter of signal relay device and form no part of the claimed design. 

CLAIM The ornamental design for a signal relay device, as shown and described. 